|
1.
15 – 14 =
1
2
|
2.
8 – 8 =
0
2
|
3.
14 – 12 =
1
2
|
4.
8 – 0 =
8
1
|
|
5.
17 + 3 =
2
20
|
6.
19 + 0 =
2
19
|
7.
7 + 3 =
10
1
|
8.
10 – 5 =
5
1
|
|
9.
2 – 1 =
2
1
|
10.
6 – 3 =
1
3
|
11.
2 – 0 =
2
1
|
12.
17 – 13 =
1
4
|
|
13.
5 – 4 =
2
1
|
14.
19 – 4 =
15
1
|
15.
1 – 1 =
0
2
|
16.
7 + 9 =
2
16
|
|
17.
7 – 0 =
1
7
|
18.
12 – 3 =
1
9
|
19.
14 – 2 =
1
12
|
20.
17 – 12 =
1
5
|
|
1.
15 – 14 =
1
2
|
2.
8 – 8 =
0
2
|
3.
14 – 12 =
1
2
|
4.
8 – 0 =
8
1
|
|
5.
17 + 3 =
2
20
|
6.
19 + 0 =
2
19
|
7.
7 + 3 =
10
1
|
8.
10 – 5 =
5
1
|
|
9.
2 – 1 =
2
1
|
10.
6 – 3 =
1
3
|
11.
2 – 0 =
2
1
|
12.
17 – 13 =
1
4
|
|
13.
5 – 4 =
2
1
|
14.
19 – 4 =
15
1
|
15.
1 – 1 =
0
2
|
16.
7 + 9 =
2
16
|
|
17.
7 – 0 =
1
7
|
18.
12 – 3 =
1
9
|
19.
14 – 2 =
1
12
|
20.
17 – 12 =
1
5
|